请老师将大智慧操盘线发出B字时编成一个预警公式
bu:=cross(high,SAR(3,1,20));sel:=cross(SAR(3,1,20),low);
var1:=last(high<SAR(3,1,20));
var2:=last(low>sar(3,1,20));
drawflagtext(bu,high,'买入');
drawflagtext(sel,low,'卖出');
drawtext(bu,LOW,'B'),valign0,align1,coloryellow,linethick2;
drawtext(sel,HIGH,'S'),valign2,align1,colorgreen,linethick2;
STICKLINE(low>SAR(3,1,20) and isdown,high,open,0.5,1),colorred;
STICKLINE(low>SAR(3,1,20) and isdown,close,open,7.5,1),colorred;
STICKLINE(low>SAR(3,1,20) and isdown,close,low,0.5,1),colorred;
STICKLINE(high<SAR(3,1,20) and isup,high,close,0.5,1),colorcyan;
STICKLINE(high<SAR(3,1,20) and isup,close,open,7.5,1),colorcyan;
STICKLINE(high<SAR(3,1,20) and isup,open,low,0.5,1),colorcyan;
drawflagtext(high<SAR(3,1,20) and high>=ref(high,1),high,'明日突破'+forcast(sar(6,1,60),max(var1,2))+'建议关注');
drawflagtext(high<SAR(3,1,20) and high<ref(high,1),high,'持币观望');
drawflagtext(low>SAR(3,1,20) and low<=ref(low,1),low,'明日跌破'+forcast(sar(6,1,60),max(var2,2))+'注意止盈');
drawflagtext(low>SAR(3,1,20) and low>ref(low,1),low,'继续持股');
cross(high,SAR(3,1,20));
谢谢老师的答复。好人一生平安。一年中个500万的大彩票。:loveliness
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